From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) Description of problem: Hi there! I have RH 7.2 on my box. I have a small LAN with 14 pcs in it. And a NAT connection to ISP. Internet is working properly. But I cannot ping and browse ISPs machines, except the one, we are connected to. I have reported our ISP, but they have no firewall tool cast us (other clients work fine with no problems) When I do arp I see some <incomplete> messages to the ISP machines. What it could be, driver issue? I have two NICs: 1) IntelPro 100 (eth0 - to Internet) 2) Realtek 8139 (eth1 - to LAN) Thanks in advance. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1.Running arp 2.pinging ISP machines Actual Results: arp icomplete for ISP machines, while running arp. Destination host unreacheable when pinging ISP machines. Additional info:
you probably have firewall rules on your linux box. Definitely not a bug, misconfiguration is the cause.